Winged lock nut



FIG. 1 is a front view of the winged lock nut;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top perspective view thereof; and,

FIG. 6 is a bottom perspective view thereof.

The dashed broken lines in FIGS. 1 through 6 depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a winged lock nut, as shown and described. 